{"id":1274,"date":"2017-06-28T13:29:16","date_gmt":"2017-06-28T13:29:16","guid":{"rendered":"http:\/\/buildsoftsupport.com\/?post_type=ht_kb&#038;p=1274"},"modified":"2025-09-04T10:17:57","modified_gmt":"2025-09-04T10:17:57","slug":"what-is-kmod","status":"publish","type":"ht_kb","link":"https:\/\/support.buildsoft.eu\/es\/knowledge-base\/what-is-kmod\/","title":{"rendered":"What is k<sub>mod<\/sub>?"},"content":{"rendered":"<div class=\"su-tabs su-tabs-style-default su-tabs-mobile-stack\" data-active=\"1\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-tabs-nav\"><span class=\"\" data-anchor=\"EN\" data-url=\"\" data-target=\"\" tabindex=\"0\" role=\"button\">EN<\/span><span class=\"\" data-anchor=\"NL\" data-url=\"\" data-target=\"\" tabindex=\"0\" role=\"button\">NL<\/span><\/div><div class=\"su-tabs-panes\"><div class=\"su-tabs-pane su-u-clearfix su-u-trim\" data-title=\"EN\">\nThe <strong>strength properties<\/strong> of timber depend on<\/p>\n<ul>\n<li>the timber type (solid, glued, &#8230;)<\/li>\n<li>the load duration time (dead load is always present, wind loads are present for a shorter time, creep)<\/li>\n<li>and the climatic conditions (temperature, moisture variations).<\/li>\n<\/ul>\n<p>The effect of these three parameter on the strength properties, is taken into account by the factor k<sub>mod<\/sub>.<\/p>\n<h2>According to Eurocode<\/h2>\n<ul>\n<li>Values for k<sub>mod<\/sub> can be found in EN 1995-1-1 Table 3.1.<\/li>\n<li>k<sub>mod<\/sub> will adjust the material properties in the design of timber structures.<\/li>\n<\/ul>\n<h2>In Diamonds<\/h2>\n<ul>\n<li>The values for k<sub>mod<\/sub> are implemented in the material library of Diamonds.<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-15190\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2025\/04\/kmod1b.png\" alt=\"\" width=\"1062\" height=\"691\"><\/li>\n<li>The service class (also called &#8216;<em>Climate class&#8217;<\/em>) to determine the value of k<sub>mod<\/sub>, can be imposed in the Load group dialog <img decoding=\"async\" loading=\"lazy\" class=\"img_inline alignnone size-full wp-image-1779\" src=\"https:\/\/buildsoftsupport.com\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups.png\" alt=\"\" width=\"36\" height=\"35\" srcset=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups.png 36w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups-35x34.png 35w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/>.&nbsp;<img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-5773\" src=\"https:\/\/buildsoftsupport.com\/wp-content\/uploads\/2017\/06\/kmod2.png\" alt=\"\" width=\"979\" height=\"384\" srcset=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2.png 979w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-300x118.png 300w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-768x301.png 768w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-50x20.png 50w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-60x24.png 60w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-35x14.png 35w\" sizes=\"(max-width: 979px) 100vw, 979px\" \/><\/li>\n<li>Where a load combination consists of actions belonging to different load duration classes, the value of k<sub>mod<\/sub> should correspond to the action with the shortest duration (EN 1995-1-1 \u00a7 3.1.3).<br \/>\nFor example: for a combination of dead load and medium term load, a value of k<sub>mod<\/sub> corresponding with the medium-term load should be used.<\/li>\n<\/ul>\n<p>Note: it is not possible to impose a climate class in PowerFrame. Each timber-quality has one k<sub>mod<\/sub> assigned, which will be used for all combinations. The value for k<sub>mod<\/sub> can be viewed\/changed with <em>Edit<\/em> &gt; <em>Material library<\/em>.<br \/>\n<\/div>\n<div class=\"su-tabs-pane su-u-clearfix su-u-trim\" data-title=\"NL\">\nDe <strong>sterkte eigenschappen<\/strong> van hout hangen af van:<\/p>\n<ul>\n<li>de houtsoort (gezaagd, gelijmd, &#8230;)<\/li>\n<li>de belastingsduur (permanente lasten zijn steeds aanwezig, wind belasting is slechts voor een korte termijn aanwezig)<\/li>\n<li>en de klimaatomstandigheden (temperatuur, variaties in de vochtigheid).<\/li>\n<\/ul>\n<p>Het effect van deze drie parameters op de sterkte eigenschappen wordt in rekening gebracht door de factor k<sub>mod<\/sub>.<\/p>\n<h2>Volgens Eurocode<\/h2>\n<ul>\n<li>Waarden voor k<sub>mod<\/sub> kan je vinden in EN 1995-1-1 Table 3.1.<\/li>\n<li>k<sub>mod<\/sub> zal de materiaaleigenschappen in de ontwerp van houten structuren aanpassen.<\/li>\n<\/ul>\n<h2>In Diamonds<\/h2>\n<ul>\n<li>De waarden voor k<sub>mod<\/sub> zijn ge\u00efmplementeerd in de materiaalbibliotheek van Diamonds.<br \/>\n<img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-15190\" src=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2025\/04\/kmod1b.png\" alt=\"\" width=\"1062\" height=\"691\"><\/li>\n<li>De klimaat klasse voor het bepalen van k<sub>mod<\/sub>, kan je opleggen in het dialoogvenster van de Lastengroepen <img decoding=\"async\" loading=\"lazy\" class=\"img_inline alignnone size-full wp-image-1779\" src=\"https:\/\/buildsoftsupport.com\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups.png\" alt=\"\" width=\"36\" height=\"35\" srcset=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups.png 36w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/10\/ButtonLoadGroups-35x34.png 35w\" sizes=\"(max-width: 36px) 100vw, 36px\" \/>.&nbsp;<img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-5773\" src=\"https:\/\/buildsoftsupport.com\/wp-content\/uploads\/2017\/06\/kmod2.png\" alt=\"\" width=\"979\" height=\"384\" srcset=\"https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2.png 979w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-300x118.png 300w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-768x301.png 768w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-50x20.png 50w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-60x24.png 60w, https:\/\/support.buildsoft.eu\/wp-content\/uploads\/2017\/06\/kmod2-35x14.png 35w\" sizes=\"(max-width: 979px) 100vw, 979px\" \/><\/li>\n<li>Wanneer een belastingscombinatie bestaat uit belastingen die tot verschillende belastingsduurklassen behoren, dient de waarde k<sub>mod<\/sub> overeen te komen met de belasting met de kortste duur (EN 1995-1-1 \u00a7 3.1.3).<br \/>\nBijvoorbeeld: voor een combinatie die zowel permanente lasten als lasten van korte duur bevat, moet een waarde van k<sub>mod<\/sub> worden gebruikt die overeenkomt met de lasten van korte duur.<\/li>\n<\/ul>\n<p>Opmerking: het is niet mogelijk om de klimaat klasse op te geven in PowerFrame. Aan elke houtkwaliteit is \u00e9\u00e9n k<sub>mod<\/sub> toegewezen, die voor alle combinaties wordt gebruikt. De waarde voor k<sub>mod<\/sub> kan worden bekeken\/gewijzigd met <em>Wijzig<\/em> &gt; <em>Materiaalbibliotheek<\/em>.<br \/>\n<\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":[],"ht-kb-category":[55,73],"ht-kb-tag":[451,446,449,502,503,1348,437,630,629,450],"_links":{"self":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/1274"}],"collection":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/comments?post=1274"}],"version-history":[{"count":3,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/1274\/revisions"}],"predecessor-version":[{"id":17303,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb\/1274\/revisions\/17303"}],"wp:attachment":[{"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/media?parent=1274"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb-category?post=1274"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/support.buildsoft.eu\/es\/wp-json\/wp\/v2\/ht-kb-tag?post=1274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}